{
    "model": {
        "rank": 2863,
        "code": "thing-q47512",
        "model_id": "vr.tr.acetic-acid",
        "name": "acetic acid",
        "purpose": "Enable an AI agent to identify acetic acid, assess the composition and condition of a particular sample, and determine which uses and handling actions its evidence supports.",
        "family": "Thing Registry",
        "category": "Physical world and living systems",
        "status": "research-draft",
        "kind": "thing",
        "plane": "PHY",
        "domain": "PHY.MAT",
        "industry": "",
        "version": "",
        "url": "/models/thing/q47512/",
        "tier": 2,
        "score": 95,
        "payload": {
            "layer": "wikidata",
            "aliases": [
                "acetic acid c-13",
                "acetic acid c-11",
                "acetic acid c-14"
            ],
            "aliasCount": 3,
            "merged": 3,
            "knownIn": 95,
            "facets": null,
            "markers": [],
            "lexicalClass": "",
            "senseRank": null,
            "alsoRegisteredAs": "vr.tr.acetic-acid",
            "source": {
                "dataset": "wikidata",
                "item": "Q47512",
                "url": "https://www.wikidata.org/wiki/Q47512",
                "license": "CC0 1.0"
            }
        },
        "research": {
            "vercy": "1.0-draft",
            "publication": {
                "status": "research-draft",
                "adjudicationStatus": "unreviewed",
                "publishableCanonical": false,
                "generatedAt": "2026-09-07T11:54:16Z",
                "providers": [
                    "Codex"
                ],
                "breadth": "recalled by Codex without web access - no source was read",
                "missingProviders": [],
                "pass": 2,
                "cost": {
                    "grok": {
                        "seconds": 31,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07bb6-f42f-78a3-a725-2b9e399a5c19\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: acetic acid\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 711 things:\n# Batch 003: 1001 regi",
                        "usd": 0,
                        "recall": true
                    },
                    "codex": {
                        "seconds": 74,
                        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.3\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a07bb6-f430-70b1-80a0-77f4c6e67df3\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: acetic acid\nRegistry id: vr.tr.acetic-acid\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\n"
                    }
                }
            },
            "metaModel": {
                "id": "THING-Q47512",
                "registryId": "vr.tr.acetic-acid",
                "name": "acetic acid",
                "version": "0.1.0-research.1",
                "entryKind": "thing",
                "family": "Thing Registry",
                "domain": [
                    "PHY.MAT"
                ],
                "status": "research-draft"
            },
            "canonicalUrl": "https://ver.cy/models/thing/q47512/",
            "model": {
                "registry_id": "vr.tr.acetic-acid",
                "name": "acetic acid",
                "purpose": "Enable an AI agent to identify acetic acid, assess the composition and condition of a particular sample, and determine which uses and handling actions its evidence supports.",
                "definition": "Acetic acid (ethanoic acid, CH3COOH) is a two-carbon monocarboxylic acid that, when pure, is a colourless, hygroscopic liquid near ordinary room temperature and is the principal acid in vinegar.",
                "scope_statement": "This model owns acetic acid as the chemical substance CH3COOH and the identity, concentration, purity, phase, reactivity and use constraints of its samples; it distinguishes the substance from acetate salts, formulated products and production processes.",
                "in_scope": [
                    "Chemical identity and authoritative registry identifiers for acetic acid, also called ethanoic acid",
                    "Acetic acid content, water content, impurities and documented grade",
                    "Physical state and measured properties under specified temperature, pressure and composition",
                    "Acid-base behaviour, chemical compatibility and relevant reaction potential",
                    "Concentration-dependent hazards, exposure controls and jurisdiction-specific classifications",
                    "Sample provenance, storage condition and evidence of suitability for an intended use"
                ],
                "out_of_scope": [
                    "Vinegar and other formulated products as complete products",
                    "Acetate salts, acetate esters and acetic anhydride as separately identified substances",
                    "Manufacturing plants, fermentation systems and synthesis processes",
                    "Biological acetate metabolism and organism-level effects",
                    "Equipment designs for storage, dosing, ventilation or processing",
                    "Clinical management of exposure and site-wide emergency response"
                ],
                "distinguishing_features": [
                    "Chemical identity must establish CH3COOH, distinguishing it from formic acid, other carboxylic acids and similarly named compounds.",
                    "An acetate salt contains an associated counterion and is not interchangeable with acetic acid; an aqueous sample may contain both acetic acid and acetate according to its conditions.",
                    "Acetic anhydride and acetate esters have different chemical structures and must not be accepted as acetic acid on name similarity alone.",
                    "A vinegar label identifies a product containing acetic acid, not a pure acetic acid sample; other constituents and the concentration basis must be recorded.",
                    "The label 'glacial acetic acid' requires supporting composition evidence; it does not by itself establish exact purity, absence of water or current physical state."
                ],
                "characteristics": [
                    {
                        "name": "Chemical and regulatory identity",
                        "kind": "relation",
                        "unit_or_values": "CH3COOH; verified CAS number, PubChem CID and EC number with source and identity scope",
                        "why_it_matters": "Prevents substitution of a related acetate compound or product and supports matching authoritative substance records."
                    },
                    {
                        "name": "Acetic acid content",
                        "kind": "measurement",
                        "unit_or_values": "% mass fraction, % volume fraction or mol/L, with explicit basis, method and applicable temperature",
                        "why_it_matters": "Concentration affects dosing, physical properties, hazards and whether a sample meets a use requirement."
                    },
                    {
                        "name": "Water content",
                        "kind": "measurement",
                        "unit_or_values": "% mass fraction or mg/kg, with analytical method and uncertainty",
                        "why_it_matters": "Water distinguishes concentrated material from aqueous solutions and can determine reaction and specification suitability."
                    },
                    {
                        "name": "Impurity profile",
                        "kind": "measurement",
                        "unit_or_values": "Named impurities with mg/kg or other explicit units, detection limits and method",
                        "why_it_matters": "An acetic acid assay alone cannot establish suitability where trace contaminants matter."
                    },
                    {
                        "name": "Grade and conformity evidence",
                        "kind": "category",
                        "unit_or_values": "Declared technical, reagent, food or other grade; named specification, revision and conformity status",
                        "why_it_matters": "Grade claims need supporting criteria before an agent can approve a sample for a particular use."
                    },
                    {
                        "name": "Physical state",
                        "kind": "state",
                        "unit_or_values": "Liquid, solid or partially crystallized, with temperature, pressure and composition",
                        "why_it_matters": "Crystallization or incomplete melting can affect transfer, sampling and representativeness."
                    },
                    {
                        "name": "Physical property measurements",
                        "kind": "measurement",
                        "unit_or_values": "Melting/freezing range in °C, boiling point in °C at stated pressure, density in kg/m³ and vapour pressure in Pa at stated temperature",
                        "why_it_matters": "Condition-specific values support storage and process decisions without treating pure-substance constants as solution properties."
                    },
                    {
                        "name": "Aqueous acidity",
                        "kind": "measurement",
                        "unit_or_values": "pH and titratable acidity with concentration, temperature, method and titration endpoint",
                        "why_it_matters": "pH and total acid content describe different aspects of a sample and cannot substitute for one another."
                    },
                    {
                        "name": "Hazard and exposure status",
                        "kind": "relation",
                        "unit_or_values": "Applicable GHS implementation, concentration-specific classification, SDS revision and exposure limits with units and averaging periods",
                        "why_it_matters": "Handling decisions require rules that match the actual material, jurisdiction and exposure scenario."
                    }
                ],
                "affordances": [
                    "Resolve a sample label to acetic acid and flag mismatches with acetate salts, esters, anhydride or formulated products.",
                    "Compare measured composition and certification against the requirements of a proposed use.",
                    "Calculate acetic acid quantities or dilution targets when concentration basis, density where needed and an approved procedure are available.",
                    "Assess whether crystallization, water uptake or contamination requires conditioning, resampling or quarantine.",
                    "Screen proposed storage, transfer and reaction contacts against documented compatibility evidence.",
                    "Identify the applicable hazard controls and unresolved evidence before authorizing handling."
                ]
            },
            "sources": [],
            "structure": {
                "bundles": [
                    {
                        "id": "acetic-acid-identity",
                        "name": "Acetic acid identity",
                        "description": "Establishes what the registered substance is and how samples and related substances attach to that identity.",
                        "rationale": "Acetic acid, acetate species and acetic-acid-containing products share terminology but require different decisions.",
                        "layers": [
                            {
                                "id": "molecular-and-registry-identity",
                                "name": "Molecular and registry identity",
                                "description": "Connects the molecular identity to verified names and external substance records.",
                                "findings": [
                                    {
                                        "id": "identity-anchor",
                                        "name": "Identity anchor",
                                        "description": "Record evidence that the material is acetic acid and that each identifier refers to the same substance.",
                                        "questions": [
                                            {
                                                "text": "Which authoritative records establish the names acetic acid and ethanoic acid, molecular identity CH3COOH, CAS number, PubChem CID and EC number?",
                                                "kind": "definition",
                                                "id": "identity-anchor-q01"
                                            },
                                            {
                                                "text": "Which supplier or analytical records connect this sample to that identity, and do any identifiers instead describe a mixture?",
                                                "kind": "provenance",
                                                "id": "identity-anchor-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "substance-and-mixture-boundaries",
                                "name": "Substance and mixture boundaries",
                                "description": "Separates acetic acid identity from aqueous speciation, related compounds and product identity.",
                                "findings": [
                                    {
                                        "id": "acid-acetate-and-product-boundary",
                                        "name": "Acid, acetate and product boundary",
                                        "description": "Record whether a reference concerns acetic acid, an aqueous acid-acetate system or a product requiring its own model.",
                                        "questions": [
                                            {
                                                "text": "Does the material designation refer to acetic acid, an acetate salt, an ester, acetic anhydride or a formulation such as vinegar?",
                                                "kind": "boundary",
                                                "id": "acid-acetate-and-product-boundary-q01"
                                            },
                                            {
                                                "text": "For an aqueous or buffered sample, does the reported amount mean undissociated acetic acid, total acid-acetate content or titratable acidity?",
                                                "kind": "definition",
                                                "id": "acid-acetate-and-product-boundary-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "composition-and-grade",
                        "name": "Composition and grade",
                        "description": "Describes how much acetic acid a sample contains and whether its composition supports a claimed grade or use.",
                        "rationale": "Concentrated acid, dilute solutions and certified grades cannot be treated as interchangeable material.",
                        "layers": [
                            {
                                "id": "acid-and-water-assay",
                                "name": "Acid and water assay",
                                "description": "Makes concentration claims comparable and identifies what an assay actually measures.",
                                "findings": [
                                    {
                                        "id": "quantified-composition",
                                        "name": "Quantified composition",
                                        "description": "Require explicit concentration bases and independent evidence where total acidity does not uniquely identify acetic acid content.",
                                        "questions": [
                                            {
                                                "text": "What are the acetic acid and water contents, expressed on which bases and measured by which methods?",
                                                "kind": "measurement",
                                                "id": "quantified-composition-q01"
                                            },
                                            {
                                                "text": "Could other acids or buffering constituents affect the assay, and what evidence distinguishes acetic acid content from total titratable acidity?",
                                                "kind": "measurement",
                                                "id": "quantified-composition-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "impurities-and-use-specifications",
                                "name": "Impurities and use specifications",
                                "description": "Connects batch evidence to explicit acceptance criteria.",
                                "findings": [
                                    {
                                        "id": "grade-supported-use",
                                        "name": "Grade-supported use",
                                        "description": "Treat grade and 'glacial' designations as claims requiring specifications and sample-level evidence.",
                                        "questions": [
                                            {
                                                "text": "Which specification defines the claimed grade or glacial designation, and which batch certificate supports compliance?",
                                                "kind": "provenance",
                                                "id": "grade-supported-use-q01"
                                            },
                                            {
                                                "text": "Which impurity limits and analytical detection limits must be satisfied before this sample can be accepted for the intended use?",
                                                "kind": "action",
                                                "id": "grade-supported-use-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "physical-state-and-chemical-behaviour",
                        "name": "Physical state and chemical behaviour",
                        "description": "Relates observable sample condition and chemical behaviour to composition and operating conditions.",
                        "rationale": "Pure acetic acid constants and aqueous solution behaviour cannot be applied without checking the material and conditions.",
                        "layers": [
                            {
                                "id": "phase-and-property-envelope",
                                "name": "Phase and property envelope",
                                "description": "Records phase observations and condition-specific physical properties.",
                                "findings": [
                                    {
                                        "id": "condition-matched-properties",
                                        "name": "Condition-matched properties",
                                        "description": "Associate each property value with composition, temperature, pressure and its measurement or reference basis.",
                                        "questions": [
                                            {
                                                "text": "What phase is observed, and what melting/freezing, boiling, density and vapour-pressure data apply to this composition under the relevant conditions?",
                                                "kind": "measurement",
                                                "id": "condition-matched-properties-q01"
                                            },
                                            {
                                                "text": "If the sample is partially crystallized, what approved conditioning and sampling procedure establishes a representative composition before use?",
                                                "kind": "action",
                                                "id": "condition-matched-properties-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "acidity-and-reaction-context",
                                "name": "Acidity and reaction context",
                                "description": "Separates acid strength, measured acidity and compatibility for specific proposed contacts.",
                                "findings": [
                                    {
                                        "id": "reaction-relevant-acidity",
                                        "name": "Reaction-relevant acidity",
                                        "description": "Record the solvent and composition context needed to interpret acidity and assess reaction proposals.",
                                        "questions": [
                                            {
                                                "text": "Which solvent, concentration and temperature define the reported pH, dissociation data or titratable acidity?",
                                                "kind": "measurement",
                                                "id": "reaction-relevant-acidity-q01"
                                            },
                                            {
                                                "text": "For proposed contact with bases, oxidizers, metals or other reagents, what evidence establishes heat release, gas generation and compatibility constraints?",
                                                "kind": "action",
                                                "id": "reaction-relevant-acidity-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "hazards-and-material-stewardship",
                        "name": "Hazards and material stewardship",
                        "description": "Connects actual composition and sample history to applicable controls and permitted handling.",
                        "rationale": "The name acetic acid alone does not establish a solution's hazard classification, exposure controls or storage suitability.",
                        "layers": [
                            {
                                "id": "classification-and-exposure",
                                "name": "Classification and exposure",
                                "description": "Identifies applicable hazard evidence and occupational exposure criteria.",
                                "findings": [
                                    {
                                        "id": "composition-specific-hazard-record",
                                        "name": "Composition-specific hazard record",
                                        "description": "Match classifications and exposure limits to the material, jurisdiction and current source.",
                                        "questions": [
                                            {
                                                "text": "Which current SDS and jurisdiction-specific GHS rules establish the skin, eye, inhalation and flammability classifications for this composition?",
                                                "kind": "provenance",
                                                "id": "composition-specific-hazard-record-q01"
                                            },
                                            {
                                                "text": "Which occupational exposure limits apply, with what units, averaging periods and measurement methods?",
                                                "kind": "measurement",
                                                "id": "composition-specific-hazard-record-q02"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "storage-transfer-and-disposition",
                                "name": "Storage, transfer and disposition",
                                "description": "Tracks whether a sample remains suitable for storage, transfer, use or disposal.",
                                "findings": [
                                    {
                                        "id": "sample-condition-and-handling-decision",
                                        "name": "Sample condition and handling decision",
                                        "description": "Use container compatibility, handling history and current evidence to support a specific next action.",
                                        "questions": [
                                            {
                                                "text": "What container, closure and contact-material compatibility evidence applies at this acetic acid concentration and storage temperature?",
                                                "kind": "action",
                                                "id": "sample-condition-and-handling-decision-q01"
                                            },
                                            {
                                                "text": "What evidence of water uptake, contamination, leakage or composition change requires retesting, quarantine or routing to an approved waste process?",
                                                "kind": "action",
                                                "id": "sample-condition-and-handling-decision-q02"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "evidence-and-external-alignment",
                        "name": "Evidence and external alignment",
                        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
                        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
                        "layers": [
                            {
                                "id": "reported-evidence",
                                "name": "Reported evidence",
                                "description": "Findings from the breadth pass, kept separate from the structural claims.",
                                "findings": [
                                    {
                                        "id": "evidence-confidence-notes",
                                        "name": "Check these first",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "This is recalled knowledge; no sources were consulted.",
                                            "Verify current grade specifications, jurisdiction-specific hazard classifications, and occupational exposure limits before regulatory or operational use.",
                                            "Physical constants given here describe pure material approximately; water content, temperature, pressure, and measurement method affect reported values."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-confidence-notes-q01",
                                                "text": "Which of these check these first hold for the sense of acetic acid this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-kinds",
                                        "name": "Kinds and varieties",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Glacial acetic acid: nearly anhydrous material",
                                            "Aqueous acetic acid solutions, distinguished by concentration",
                                            "Technical-grade acetic acid",
                                            "Reagent-grade acetic acid",
                                            "Food-grade acetic acid",
                                            "Pharmacopoeial-grade acetic acid"
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-kinds-q01",
                                                "text": "Which of these kinds and varieties hold for the sense of acetic acid this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-identifiers",
                                        "name": "Identifiers and schemes",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "scheme": "CAS Registry Number",
                                                "value_or_pattern": "64-19-7",
                                                "note": "Identifies acetic acid; does not specify concentration or grade."
                                            },
                                            {
                                                "scheme": "PubChem CID",
                                                "value_or_pattern": "176",
                                                "note": "Compound identifier for acetic acid."
                                            },
                                            {
                                                "scheme": "EC number",
                                                "value_or_pattern": "200-580-7",
                                                "note": "European substance inventory identifier."
                                            },
                                            {
                                                "scheme": "EU food additive E number",
                                                "value_or_pattern": "E260",
                                                "note": "Food additive designation for acetic acid; not a general certification of food-grade purity."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-identifiers-q01",
                                                "text": "Which of these identifiers and schemes hold for the sense of acetic acid this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-standards-and-regulation",
                                        "name": "Standards and regulation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "United Nations Globally Harmonized System of Classification and Labelling of Chemicals (GHS): framework for communicating chemical hazards.",
                                            "American Chemical Society (ACS), Reagent Chemicals: specifications for reagent-grade acetic acid.",
                                            "United States Pharmacopeia (USP), Food Chemicals Codex (FCC): specifications for food ingredient identity and purity."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-standards-and-regulation-q01",
                                                "text": "Which of these standards and regulation hold for the sense of acetic acid this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-real-world-use",
                                        "name": "Real-world use",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Acidulant and preservative in food, including vinegar-based products.",
                                            "Feedstock for vinyl acetate monomer used in polymers and adhesives.",
                                            "Production of acetate esters used as solvents.",
                                            "Chemical process solvent, including in terephthalic acid manufacture.",
                                            "Laboratory reagent for acidification and preparation of acetate buffers."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-real-world-use-q01",
                                                "text": "Which of these real-world use hold for the sense of acetic acid this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-measurements",
                                        "name": "Typical measurements",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "quantity": "Molar mass",
                                                "typical_range": "60.05",
                                                "unit": "g/mol"
                                            },
                                            {
                                                "quantity": "Melting point of pure acetic acid at approximately atmospheric pressure",
                                                "typical_range": "16.6",
                                                "unit": "°C"
                                            },
                                            {
                                                "quantity": "Normal boiling point of pure acetic acid at 101.325 kPa",
                                                "typical_range": "118.1",
                                                "unit": "°C"
                                            },
                                            {
                                                "quantity": "Density of pure liquid at approximately 20 °C",
                                                "typical_range": "1.05",
                                                "unit": "g/cm³"
                                            },
                                            {
                                                "quantity": "Aqueous acid dissociation pKa at approximately 25 °C",
                                                "typical_range": "4.76",
                                                "unit": "dimensionless"
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-measurements-q01",
                                                "text": "Which of these typical measurements hold for the sense of acetic acid this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-failure-modes-and-hazards",
                                        "name": "Failure modes and hazards",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Concentrated acetic acid is corrosive and can cause severe skin burns and eye damage; weak-acid behaviour does not imply low hazard.",
                                            "Vapour and mist irritate the eyes and respiratory tract.",
                                            "Concentrated material is flammable and can form ignitable vapour-air mixtures when sufficiently warm.",
                                            "Contact with strong bases or incompatible oxidizing agents can produce substantial heat or hazardous reactions.",
                                            "Acetic acid can attack susceptible metals, potentially releasing hydrogen and contaminating the material."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-failure-modes-and-hazards-q01",
                                                "text": "Which of these failure modes and hazards hold for the sense of acetic acid this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-regional-variation",
                                        "name": "Regional variation",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            "Food additive labelling may use E260, INS 260, or the substance name, depending on jurisdiction.",
                                            "Occupational exposure limits, mixture classification thresholds, and transport requirements depend on jurisdiction and concentration.",
                                            "Food, reagent, and pharmacopoeial grades follow different specifications; a grade designation should identify the applicable specification."
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-regional-variation-q01",
                                                "text": "Which of these regional variation hold for the sense of acetic acid this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    },
                                    {
                                        "id": "evidence-neighbours",
                                        "name": "Neighbouring kinds and how to tell them apart",
                                        "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                                        "evidence": [
                                            {
                                                "name": "Vinegar",
                                                "difference": "Vinegar is a dilute aqueous food product containing acetic acid and other constituents, rather than the pure chemical substance."
                                            },
                                            {
                                                "name": "Acetate",
                                                "difference": "Acetate denotes the conjugate-base ion CH3COO− or related salts and esters, rather than molecular acetic acid."
                                            },
                                            {
                                                "name": "Acetic anhydride",
                                                "difference": "Acetic anhydride is a distinct compound, (CH3CO)2O, that reacts with water to form acetic acid."
                                            },
                                            {
                                                "name": "Formic acid",
                                                "difference": "Formic acid has one carbon atom and formula HCOOH, whereas acetic acid has two carbon atoms."
                                            }
                                        ],
                                        "questions": [
                                            {
                                                "id": "evidence-neighbours-q01",
                                                "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of acetic acid this model covers, and on what evidence?",
                                                "kind": "provenance"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "openQuestions": [
                "Does an existing Vercy world model already cover acetic acid and require this registry entry to link to it instead of creating a second publication?",
                "Which authoritative identity records and property references should anchor the model, and what composition and condition ranges do their values cover?",
                "Which specifications define glacial, reagent, technical and food grades in the intended deployment jurisdictions?",
                "Which concentration-dependent hazard classifications and current occupational exposure limits apply where the material will be used?",
                "Which intended uses require impurity-specific testing, validated container compatibility or conditioning procedures beyond a general acetic acid assay?"
            ],
            "statistics": {
                "bundles": 5,
                "layers": 9,
                "findings": 17,
                "questions": 25
            }
        },
        "draft": {
            "generator": "vr.draft.v3",
            "status": "draft-generated",
            "researched": false,
            "archetype": "chemical substance or material",
            "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.",
            "facetsInferred": true,
            "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.",
            "purpose": "Give an agent a durable, checkable way to recognise a acetic acid, record what state it is in, and decide what may be done with it.",
            "whatItIs": "Enable an AI agent to identify acetic acid, assess the composition and condition of a particular sample, and determine which uses and handling actions its evidence supports.",
            "characteristics": {
                "substance": "material",
                "origin": "natural",
                "agency": "inert",
                "mobility": "varies"
            },
            "whatYouCanDoWithIt": [
                "observed and measured",
                "consumed or used up"
            ],
            "distinguishingFeatures": [
                "Names folded into this entry, which a task may need to split apart again: acetic acid c-13, acetic acid c-11, acetic acid c-14.",
                "3 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.",
                "Described in 95 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is."
            ],
            "openQuestionsForResearch": [
                "Which of the bundles below does a real task actually need, and which are ceremony?",
                "What does this thing have that the facets do not capture at all?",
                "Which neighbouring kind is most often confused with a acetic acid, and on what evidence are they told apart?"
            ],
            "whatItIsMadeOf": "matter you can touch",
            "physicalCharacter": [
                "Mobility varies between examples.",
                "Does nothing on its own; everything it does, something else did to it.",
                "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing."
            ],
            "whatCanBeDoneWithIt": [
                "observe it, measure it, record its state",
                "use it up, and then need more of it"
            ],
            "howItIsRecognised": [
                "Not recognisable by sight in any reliable way. Appearance varies with grade, form and additives; identification is by label, by documentation, or by assay."
            ],
            "relatedModels": [
                {
                    "relation": "covers",
                    "note": "Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.",
                    "targets": [
                        "acetic acid c-13",
                        "acetic acid c-11",
                        "acetic acid c-14"
                    ]
                }
            ],
            "standing": "Described in 95 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 3 finer distinctions are held inside this entry as names rather than as separate models.",
            "structure": {
                "bundles": [
                    {
                        "id": "identity-and-classification",
                        "name": "Identity, naming and classification",
                        "description": "How an agent tells one acetic acid from another, and a acetic acid from things that resemble it.",
                        "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.",
                        "layers": [
                            {
                                "id": "naming-and-identifiers",
                                "name": "Names and identifiers",
                                "description": "The names this thing goes by and the identifiers that survive translation and time.",
                                "findings": [
                                    {
                                        "id": "preferred-name-and-aliases",
                                        "name": "Preferred name, aliases and local names",
                                        "description": "Which name to use, which names mean the same thing, and which merely sound similar.",
                                        "questions": [
                                            {
                                                "id": "preferred-name-and-aliases-q01",
                                                "text": "What identifies and describes the name of a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q02",
                                                "text": "Who or what asserted this about the name of a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "preferred-name-and-aliases-q03",
                                                "text": "What may an agent decide or do once the name of a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "stable-identifiers",
                                        "name": "Stable identifiers and external keys",
                                        "description": "Identifiers that keep pointing at this kind of thing across systems and languages.",
                                        "questions": [
                                            {
                                                "id": "stable-identifiers-q01",
                                                "text": "What identifies and describes an identifier for a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q02",
                                                "text": "Who or what asserted this about an identifier for a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stable-identifiers-q03",
                                                "text": "What may an agent decide or do once an identifier for a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "classification-and-granularity",
                                "name": "Classification and granularity",
                                "description": "Where a acetic acid sits among kinds, and how finely a task needs to cut it.",
                                "findings": [
                                    {
                                        "id": "kind-and-parents",
                                        "name": "Kind, parents and neighbouring kinds",
                                        "description": "The classes this thing belongs to and the ones it is next to.",
                                        "questions": [
                                            {
                                                "id": "kind-and-parents-q01",
                                                "text": "What identifies and describes the kind of a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q02",
                                                "text": "Who or what asserted this about the kind of a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "kind-and-parents-q03",
                                                "text": "What may an agent decide or do once the kind of a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    },
                                    {
                                        "id": "distinguishing-features",
                                        "name": "Distinguishing features",
                                        "description": "What separates a acetic acid from the things most often confused with it.",
                                        "questions": [
                                            {
                                                "id": "distinguishing-features-q01",
                                                "text": "What identifies and describes what distinguishes a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q02",
                                                "text": "Who or what asserted this about what distinguishes a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "distinguishing-features-q03",
                                                "text": "What may an agent decide or do once what distinguishes a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "form-and-composition",
                        "name": "Form, composition and condition",
                        "description": "What a acetic acid is made of, what shape and size it takes, and what state it is in.",
                        "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.",
                        "layers": [
                            {
                                "id": "form-and-dimensions",
                                "name": "Form and dimensions",
                                "description": "Shape, size, mass and the ranges these take across examples.",
                                "findings": [
                                    {
                                        "id": "measurable-dimensions",
                                        "name": "Measurable dimensions and their units",
                                        "description": "The quantities worth recording and the units they are recorded in.",
                                        "questions": [
                                            {
                                                "id": "measurable-dimensions-q01",
                                                "text": "What identifies and describes the dimensions of a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q02",
                                                "text": "Who or what asserted this about the dimensions of a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "measurable-dimensions-q03",
                                                "text": "What may an agent decide or do once the dimensions of a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "material-and-composition",
                                "name": "Material and composition",
                                "description": "Materials, parts and how they are put together.",
                                "findings": [
                                    {
                                        "id": "parts-and-materials",
                                        "name": "Parts and materials",
                                        "description": "What a acetic acid is built from and which parts are replaceable.",
                                        "questions": [
                                            {
                                                "id": "parts-and-materials-q01",
                                                "text": "What identifies and describes the composition of a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q02",
                                                "text": "Who or what asserted this about the composition of a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "parts-and-materials-q03",
                                                "text": "What may an agent decide or do once the composition of a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "condition-and-integrity",
                                "name": "Condition and integrity",
                                "description": "Wear, damage, health and the difference between working and broken.",
                                "findings": [
                                    {
                                        "id": "condition-assessment",
                                        "name": "Condition, damage and health",
                                        "description": "How the condition of a acetic acid is judged and by whom.",
                                        "questions": [
                                            {
                                                "id": "condition-assessment-q01",
                                                "text": "What identifies and describes the condition of a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q02",
                                                "text": "Who or what asserted this about the condition of a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "condition-assessment-q03",
                                                "text": "What may an agent decide or do once the condition of a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "place-and-movement",
                        "name": "Place and movement",
                        "description": "Where a acetic acid is, how it got there and where it may go (varies).",
                        "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.",
                        "layers": [
                            {
                                "id": "location-and-placement",
                                "name": "Location and placement",
                                "description": "Position, containment and the reference frame the position is given in.",
                                "findings": [
                                    {
                                        "id": "position-and-frame",
                                        "name": "Position, container and reference frame",
                                        "description": "Where a acetic acid is, and what that position is measured against.",
                                        "questions": [
                                            {
                                                "id": "position-and-frame-q01",
                                                "text": "What identifies and describes the location of a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q02",
                                                "text": "Who or what asserted this about the location of a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "position-and-frame-q03",
                                                "text": "What may an agent decide or do once the location of a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "movement-and-transfer",
                                "name": "Movement and transfer",
                                "description": "How a acetic acid is carried, installed or relocated.",
                                "findings": [
                                    {
                                        "id": "movement-events",
                                        "name": "Movement events and constraints",
                                        "description": "What counts as a movement, what records it and what limits it.",
                                        "questions": [
                                            {
                                                "id": "movement-events-q01",
                                                "text": "What identifies and describes the movement of a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q02",
                                                "text": "Who or what asserted this about the movement of a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "movement-events-q03",
                                                "text": "What may an agent decide or do once the movement of a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "state-and-lifecycle",
                        "name": "State and lifecycle",
                        "description": "The states a acetic acid passes through and the events that move it between them.",
                        "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.",
                        "layers": [
                            {
                                "id": "lifecycle-stages",
                                "name": "Lifecycle stages",
                                "description": "From coming into existence to ceasing to be one of these.",
                                "findings": [
                                    {
                                        "id": "stages-and-transitions",
                                        "name": "Stages and transitions",
                                        "description": "The stages worth naming and what moves a acetic acid between them.",
                                        "questions": [
                                            {
                                                "id": "stages-and-transitions-q01",
                                                "text": "What identifies and describes the lifecycle of a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q02",
                                                "text": "Who or what asserted this about the lifecycle of a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "stages-and-transitions-q03",
                                                "text": "What may an agent decide or do once the lifecycle of a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "observations-and-status",
                                "name": "Observations and current status",
                                "description": "What is observed about a acetic acid, how often and by whom.",
                                "findings": [
                                    {
                                        "id": "observation-record",
                                        "name": "Observation record",
                                        "description": "How an observation of a acetic acid is recorded so that it can be superseded rather than overwritten.",
                                        "questions": [
                                            {
                                                "id": "observation-record-q01",
                                                "text": "What identifies and describes an observation of a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q02",
                                                "text": "Who or what asserted this about an observation of a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "observation-record-q03",
                                                "text": "What may an agent decide or do once an observation of a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "use-and-operation",
                        "name": "Use and operation",
                        "description": "What can be done with a acetic acid and what it takes to do it.",
                        "rationale": "An agent that can recognise a thing but not act on it has only half a model.",
                        "layers": [
                            {
                                "id": "intended-use",
                                "name": "Intended use and function",
                                "description": "What a acetic acid is for, and what it is used for anyway.",
                                "findings": [
                                    {
                                        "id": "function-and-purpose",
                                        "name": "Function, purpose and misuse",
                                        "description": "The function a acetic acid performs and the uses that fall outside it.",
                                        "questions": [
                                            {
                                                "id": "function-and-purpose-q01",
                                                "text": "What identifies and describes the use of a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q02",
                                                "text": "Who or what asserted this about the use of a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "function-and-purpose-q03",
                                                "text": "What may an agent decide or do once the use of a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "handling-and-procedure",
                                "name": "Handling and procedure",
                                "description": "The steps, skills and tools involved in using a acetic acid.",
                                "findings": [
                                    {
                                        "id": "procedures-and-skills",
                                        "name": "Procedures, skills and required tools",
                                        "description": "What an agent needs before it can act on a acetic acid at all.",
                                        "questions": [
                                            {
                                                "id": "procedures-and-skills-q01",
                                                "text": "What identifies and describes handling a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q02",
                                                "text": "Who or what asserted this about handling a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "procedures-and-skills-q03",
                                                "text": "What may an agent decide or do once handling a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "supply-and-consumption",
                                "name": "Supply and consumption",
                                "description": "Quantities, rates and what running out means.",
                                "findings": [
                                    {
                                        "id": "consumption-and-stock",
                                        "name": "Consumption, stock and replenishment",
                                        "description": "How much of a acetic acid there is and how fast it goes.",
                                        "questions": [
                                            {
                                                "id": "consumption-and-stock-q01",
                                                "text": "What identifies and describes the supply of a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "consumption-and-stock-q02",
                                                "text": "Who or what asserted this about the supply of a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "consumption-and-stock-q03",
                                                "text": "What may an agent decide or do once the supply of a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "composition-and-identity",
                        "name": "Composition, grade and chemical identity",
                        "description": "What acetic acid is made of and how pure the thing in hand is.",
                        "rationale": "Grade decides what a substance may be used for, so a model that records only the name cannot support any decision about use.",
                        "layers": [
                            {
                                "id": "chemical-identity",
                                "name": "Chemical identity",
                                "description": "Formula, structure and the registry numbers that name it unambiguously.",
                                "findings": [
                                    {
                                        "id": "identity-record",
                                        "name": "Identity and registry numbers",
                                        "description": "What identifies this substance across suppliers and regulators.",
                                        "questions": [
                                            {
                                                "id": "identity-record-q01",
                                                "text": "What formula, structure and registry identifiers name acetic acid unambiguously?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "identity-record-q02",
                                                "text": "Which related substances share a name in common use but not an identifier?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "grade-and-impurities",
                                "name": "Grade, purity and impurities",
                                "description": "The specification a batch meets and what else is in it.",
                                "findings": [
                                    {
                                        "id": "specification",
                                        "name": "Specification and assay",
                                        "description": "How purity is stated and measured, and which impurities matter.",
                                        "questions": [
                                            {
                                                "id": "specification-q01",
                                                "text": "What grades of acetic acid exist, how is purity assayed, and which impurities are limited?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "specification-q02",
                                                "text": "Which use requires which grade, and what happens when a lower grade is substituted?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "properties-and-behaviour",
                        "name": "Properties and behaviour",
                        "description": "How acetic acid behaves under conditions an agent can measure or change.",
                        "rationale": "Physical constants are the part of a substance model that transfers between contexts, and each needs its unit and its conditions.",
                        "layers": [
                            {
                                "id": "physical-constants",
                                "name": "Physical constants",
                                "description": "Values that hold for the pure substance, with their conditions.",
                                "findings": [
                                    {
                                        "id": "constants-record",
                                        "name": "Constants and conditions",
                                        "description": "The quantities worth recording and the state they apply in.",
                                        "questions": [
                                            {
                                                "id": "constants-record-q01",
                                                "text": "What are the defining physical constants of acetic acid, in what units and under what conditions?",
                                                "kind": "measurement"
                                            },
                                            {
                                                "id": "constants-record-q02",
                                                "text": "Which of these values change with grade or form rather than being fixed?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "stability-and-reactivity",
                                "name": "Stability and reactivity",
                                "description": "What it reacts with, degrades into, and how it is stored.",
                                "findings": [
                                    {
                                        "id": "incompatibilities",
                                        "name": "Incompatibilities and degradation",
                                        "description": "What must not meet it, and what it becomes over time.",
                                        "questions": [
                                            {
                                                "id": "incompatibilities-q01",
                                                "text": "What is acetic acid incompatible with, and what does it degrade into under storage?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "incompatibilities-q02",
                                                "text": "What storage and handling does that require, and who is competent to do it?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "hazard-and-regulation",
                        "name": "Hazard classification and regulation",
                        "description": "How acetic acid can harm, and what the law says about holding and moving it.",
                        "rationale": "A substance model without its hazard class and its regulatory identity is unusable in exactly the situations that matter.",
                        "layers": [
                            {
                                "id": "hazard-class",
                                "name": "Hazard classification",
                                "description": "Classified hazards, exposure limits and protective measures.",
                                "findings": [
                                    {
                                        "id": "classified-hazards",
                                        "name": "Classified hazards and limits",
                                        "description": "The classification, the scheme it belongs to, and the limits set.",
                                        "questions": [
                                            {
                                                "id": "classified-hazards-q01",
                                                "text": "How is acetic acid classified for hazard, under which scheme, and what exposure limits apply?",
                                                "kind": "definition"
                                            },
                                            {
                                                "id": "classified-hazards-q02",
                                                "text": "What protection does handling require, and what must an agent refuse to do without it?",
                                                "kind": "action"
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "regulatory-identity",
                                "name": "Regulatory identity and control",
                                "description": "Registration, restriction and transport rules by jurisdiction.",
                                "findings": [
                                    {
                                        "id": "controls",
                                        "name": "Controls and jurisdiction",
                                        "description": "Where it is restricted and what the restriction attaches to.",
                                        "questions": [
                                            {
                                                "id": "controls-q01",
                                                "text": "Which registrations, restrictions or transport rules cover acetic acid, and where?",
                                                "kind": "provenance"
                                            },
                                            {
                                                "id": "controls-q02",
                                                "text": "Does the control attach to the substance, its concentration, or its intended use?",
                                                "kind": "boundary"
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    },
                    {
                        "id": "provenance-and-evidence",
                        "name": "Provenance, evidence and time",
                        "description": "Where every claim about a acetic acid came from and when it held.",
                        "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.",
                        "layers": [
                            {
                                "id": "source-and-authority",
                                "name": "Source and authority",
                                "description": "Who said it, on what evidence, and how strongly.",
                                "findings": [
                                    {
                                        "id": "claim-provenance",
                                        "name": "Claim provenance and confidence",
                                        "description": "The authority behind each claim about a acetic acid and how confident it is.",
                                        "questions": [
                                            {
                                                "id": "claim-provenance-q01",
                                                "text": "What identifies and describes a claim about a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q02",
                                                "text": "Who or what asserted this about a claim about a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "claim-provenance-q03",
                                                "text": "What may an agent decide or do once a claim about a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            },
                            {
                                "id": "time-and-versions",
                                "name": "Time, versions and supersession",
                                "description": "When a claim was true, when it was learnt, and what replaced it.",
                                "findings": [
                                    {
                                        "id": "validity-and-supersession",
                                        "name": "Validity period and supersession",
                                        "description": "How an old claim about a acetic acid is retired without being erased.",
                                        "questions": [
                                            {
                                                "id": "validity-and-supersession-q01",
                                                "text": "What identifies and describes the validity of a claim about a acetic acid, and in what units or vocabulary?",
                                                "kind": "definition",
                                                "answer_data": [
                                                    "identifiers",
                                                    "types and classes",
                                                    "values with units",
                                                    "explicit unknowns"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q02",
                                                "text": "Who or what asserted this about the validity of a claim about a acetic acid, by which method, and when was it true?",
                                                "kind": "provenance",
                                                "answer_data": [
                                                    "authority",
                                                    "method",
                                                    "evidence",
                                                    "event time",
                                                    "knowledge time"
                                                ]
                                            },
                                            {
                                                "id": "validity-and-supersession-q03",
                                                "text": "What may an agent decide or do once the validity of a claim about a acetic acid is known, and what must it refuse?",
                                                "kind": "action",
                                                "answer_data": [
                                                    "permitted actions",
                                                    "preconditions",
                                                    "refusals",
                                                    "escalation"
                                                ]
                                            }
                                        ]
                                    }
                                ]
                            }
                        ]
                    }
                ]
            },
            "statistics": {
                "bundles": 9,
                "layers": 20,
                "findings": 22,
                "questions": 60
            }
        }
    }
}